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For a helical antenna, the half-power beamwidth and directive gain are given by
where C = πD, N = L/S, and S = C tan α,in which α is called the pitch angle, and
The input impedance seen by the transmission line at point P is almost purely resistive, given by Za ∼ = 140C/λ. Calculate the antenna parameters of a 10-turn helix at f = 500 MHz by assuming that C = λ and α = 14π/180.
RRC Rotate Accumulator Right Instruction This instruction also rotates the contents of the accumulator toward right by one bit. The D 7 bit moves to D 5 position a
Question: A DC, separately excited motor is supplied from a 240-V source. When the motor is unloaded, it draws 1A of current from the source. When the motor is loaded, it draws
What is 16-bit ISA? Compare it with 8-bit ISA bus. The only difference among the 8 and 16-bit ISA bus is that other connector is attached behind the 8-bit connector. This 16-bi
Voltage regulator: A voltage regulator is an electrical regulator intended to automatically keep a constant voltage level. A voltage regulator is an instance of a negative fee
The ampere has been defined (by the International Committee of Weights and Measures in 1946) as the current flowing in two long parallel wires 1 metre apart that produces a force o
The frequency domain representation of a signal is shown below: i. What are the fundamental frequency and the corresponding period of this signal (shown in Figure )? ii. Pl
how capacitor works as transducer?
A 3-phase, wye-connected, 11.8 kV, 100 MVA turbo- generator of 0.8 power factor lagging has a synchronous reactance of 2.0 p.u. on rating. The generator is driven by a steam turbin
Give the significance of SIM and RIM instruction available in 8085. Instruction SIM: Set Interrupt Mask. This is a 1 byte instruction and can be used three dissimilar functio
(a) In the so-called folded binary code of 4 bits, the left most digit represents the sign of an analog signal's quantized samples (with 0 for negative and 1 for positive), and the
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